I would suggest that you not worry about it;
A Buyer will see the errors when they visit the house, you will document them in the Contract, and the Title Company will correct the County Records when the Title goes thru.
All you care about is that the prospective buyers know about the errors.
Good luck and may God bless
I would go find your local assessor's office and get it straighten out.
I'm sure they would be glad to resolve this issue.
God Bless You,
Century 21 Whitney Agency Inc.
1605 S. Baltimore Suite A
Kirksville, MO. 63501
The Marie Souza Team - Top Selling on Cape Cod
Cape Cod Real Estate Services
I suggest you contact your assessors office for the town/county you live in. If the sites you are referring to are pulling public records they would be coming from the assessor.